Materialrubber rubber grommets with uniform wall thickness, strong tensile strength and good toughness. Sealing rings with high electrical resistance fit precisely and effectively in these drill holes.Rubber sealOrganized in a box: Packed in a transparent box, which is very suitable for storage and removal.Set Rubber Cable GrommetsThe rubber grommets are heat-resistant, oil-resistant, wear-resistant and very practical and handy. There is a thin rubber membrane in the middle that you can puncture to make your own opening.ApplicationRubber sealing ring can be used for electrical repairs, prevents metal to metal contact and replaces worn grommets or broken in taps, pipes, etc.Scope of delivery The rubber gasket set contains 7 common sizes. 50pcs 7.14mm / 40pcs 9.53mm / 30pcs 12.07mm / 20pcs 15.88mm 10pcs 19.05mm / 10pcs 22.23mm / 10pcs 25.40mm. rubber are made of high quality rubber material, flexible and durable, they have good electrical resistance. And rubber o-rings fit snugly and effectively.Rubber grommets are designed for easy installation and with snap-on mounting holes, metal plates. Usually used in holes in metal plates or other materials to protect cables, wires, cords from possible mechanical or chemical attack in order to protect wires, cables, etc. and give a neat look to your furniture, electrical boxes.Must-have rubber sealing rings are for automobiles, RV wiring work, marine applications, leaking fittings, pipe repair, etc. ., a good tool kit for repair shops, electricians, movers, home renovation, plumbers, etc. Specification: Material: Rubber Color: Black Temperature Range: -40C to +100C (briefly -50C to +150C)Rubber grommet 7.14 mm x 50 pieces.Rubber grommet 9.53 mm x 40 pieces.Grommet rubber grommet 12.07mm x 30pcs.Rubber grommet 15.88mm x 20pcs.Rubber grommet 19.05mm x 10pcs.Rubber grommet 22.23mm x 10pcs. -rubber wire 25.40mm x 10pcs.Package Details:170 rubber grommets in 7 different sizesNote: The data are all manual measurement, please allow 1-error 3cm, due to the light and display difference, there will be some color difference, depending on the physical object received."